SOUTHERN REGIONAL LOAD DESPATCH CENTREPOWER GRID CORPORATION OF INDIA LIMITEDWELCOME TOK. SWAMINATHAN, CHAIRMANK. SREERAMA MURTHY, MEMBERSURINDER PAL, MEMBEROF APERC, ANDHRA PRADESH24th June, 2005

PRESENTATION OVERVIEW SR GRID - QUICK FACTS

OPEN ACCESS REGULATIONS RECENT CHANGES

IMPACT OF CHANGES CASE STUDIES

SHORT TERM OPEN ACCESS EXPERIENCES

SCHEDULE DRAWAL GRAPHS

REGULATORS ROLE - CPPs

STATE SECTOR INTRASTATE ABT

THANK YOU

SOUTHERN REGIONAL GRID

QUICK FACTS

SOUTHERN REGIONWESTERNREGIONEASTERN REGIONNORTHERN REGIONNORTH-EASTERN REGIONINSTALLED CAPACITYNORTHERN :- 31,230 MW EASTERN :- 17,697 MWSOUTHERN :- 32,734 MWWESTERN :- 32,354 MWNORTH-EASTERN :- 2,357 MWTOTAL 116,372 MWREGIONAL GRIDS

SOUTHERN REGION GEOGRAPHYPOPULATION :- 22.5 CRORES ( 22% OF INDIA)AREA :- 651 (000 SQ KM)(19% OF INDIA)INSTALLED CAPACITY:- 32,734 MW(28.1%)PER CAPITA CONSUM. 700 unit (A. I. 567) WEATHER :- South-west monsoon North-east monsoonSEA COAST :- AROUND 4000 KM

INSTALLED CAPACITY IN SRThe above capacity does not includes---About 1342 MW of Wind Mill Capacity in Tamil Nadu.--- Micro and Captive plants in different states.

STATESHYDROTHERMALNUCLEARDIESEL/GASWIND/OTHERSTOTAL%AP35862993---2722685321%KAR32771470---1285487915%KER1811-----235220476%TN19872970---42319540017%PONDY--------32---320.1%C.S---8090830360---928028%IPP278387---25061071424313%TOTAL10939159108303956109932734%33%49%3%12%3%

SOURCE-WISE INSTALLED CAPACITY OF SRIN MW32,734 MWHYDROTHERMALWIND/OTHERSNUCLEARGAS

SR CHART

10939

15910

3956

1099

830

SR

STATE/CGSHYDROTHERMALGASWIND/OTHERSNUCLEARTOTAL

TOTAL10939159103956109983032734

33%49%12%3%3%

AP CHART

3042

3443

273

2

1100

AP

STATE/CGSHYDROTHERMALGASWINDIPPTOTAL

ANDHRA PRADESH30423443273211007860

KAR CHART

3082

1388

2

341

KAR

STATE/CGSHYDROTHERMALWINDIPPTOTAL

KARNATAKA3082138823414813

KER CHART

1795

235

350

2

171

KER

STATE/CGSHYDROTHERMALGASWINDIPPTOTAL

KERALA179523535021712553

TN CHART

1993

3570

130

19

875

TN

STATE/CGSHYDROTHERMALGASWINDIPPTOTAL

TAMIL NADU19933570130198756587

Sheet2

Sheet3

GENERATING UNITS IN SOUTHERN REGIONA.PKARTNKERTYPICALGENERATORSPREADIN SR- HYDRO- THERMAL- GAS / NAPTHA- NUCLEARGENERATING STATIONS ABOVE 1000 MW GENERATING STATIONS 500 1000 MWGENERATING STATIONS BELOW 500 MW

UNIT CAPACITYAPKARKERTNCGSTOTALTHERMAL (500 MW)2810THERMAL (200-250 MW)107131545GAS/THERMAL (100-150 MW)923923HYDRO (>50 MW)2727161585TOTAL48361937162

LOAD 500-1200 MWLOAD 200-500 MW

GRID MAPKHAMMAMVIJAYAWADANAGARJUNASAGARVISAKHAPATNAM (POWERGRID)HYDERABADRAICHURGOOTYHOODYSALEMUDUMALPETTRICHURMADURAITRICHYMADRASNEYVELICUDDAPAHDAVANAGEREKAIGA115317RSTPPBHADRAVATI130x2164x2182151181173302308172277279155178x2 PONDICHERYBANGALORESIRSIMUNIRABADPPPPPPPPPPPPPPPNKOLARPALLOM KAYANKULAMEDAMONTALCHER JEYPORE631872x782x22154HOSURKADRA KODASAALY Nagjhari112060MAPSPSSLMMMMDPTHIRUVANATHAPURAMALMATHINELLORE400 KV LINE PRESENTLY OPERATED AT 220 KVSHORTLY WILL BE OPERATED AT 400 KV.NELAMANGALAKURNOOLGAZUWAKA(AP)SIMHADRI NTPCHIRIYUR189195267x2258242175179127130x2221x2146x252x2197x2301x28x415x230028330ABOUT 12000 CKM 400KV TRANSMISSIONTALGUPPAGRID FOCAL POINT SHIFTED TO KOLAR AFTER COMMISSIONING OF HVDCKOODANKULAMTHIRNELVALITYPICAL FLOWS ARE FROM NORTH TO SOUTHQUANTUM CHANGES IN FLOW PATTERN LIKELY AFTER COMMISSIONING OF KOODANKULAM 2000 MW

TYPICAL LOAD CURVE OF SRWINTERMONSOONSUMMEREVENING PEAK

DEEP VALLEYDEEP VALLEYSHARPPEAK

GRID OPERATION

TYPICAL ISSUES IN THE PAST

GRID OPERATION TYPICAL ISSUES IN PASTLOW / HIGH FREQUENCY PROBLEMSFREQUENCY EXCURSES TO LOW/HIGH VALUESLOW / HIGH VOLTAGE OPERATIONCRITICALLY LOW VOLTAGES AT LOAD CENTRESSUBSTANTIALLY HIGH VOLTAGES AT FAR ENDSSYSTEM BROWNOUTS / BLACK OUTSSEPERATION OF SYSTEMS / LOSS OF LOADECONOMIC IN-STABILITY / INCREASED ELECTRICAL LOSSESUNRELIABLE / INEFFICIENT OPERATION OF EQUIPMENT

GRID PRESENT STATUS

FREQUENCY DURATION CURVE 2002-03, 2003-04 & 2004-052004-052003-042002-03

REALITY BITE:FARMERS IN KARNATAKA ARE HAPPY WITH FEWER HOURS OF QUALITY POWER!!.EFFICIENCY OF PUMPS AT TG HALLI WATER WORKS IMPROVED!COMPARISION OF BANGALORE VOLTAGE-TYPICAL DAYBETTER VOLTAGE PROFILE MEANS LESS ELECTRICAL LOSSES

WATER SUPPLY TO BANGALORELOW VOLTAGE PROBLEMS AROUND BANGALORE HAMPERED WATER SUPPLY EARLIERWITH BETTER VOLTAGE NOW, PUMPING EFFICIENCY HAS IMPROVED400 KV STATION AT MYSORE BEING COMMISSIONED ON WAR FOOTING TO FURTHER FORTIFY THIS PART OF THE GRIDPUMPING LOSSES REDUCEDENORMOUS SAVINGS TO THE STATEMOTOR BURNING AND MAINTENANCE COSTS ALSO CAME DOWN DRASTICALLY

SOUTHERN REGION LOSS**Source : Report of System Studies conducted for Accessing Shunt Compensation requirement in Southern Region March 2004 and March 2005 - SREB ,CEA ** Projected figures0.5% REDUCTION MEANS 100 CR ANNUAL SAVINGS

GRID PRESENT STATUS

CARDINAL EVENTS

GRID PRESENT STATUS -- CARDINAL EVENTSAVAILABILITY BASED TARIFFUNIFIED LOAD DESPATCH SCHEMEINTERREGIONAL AC / HVDC LINKSNEW GENERATION ADDITION SYSTEM STRENGTHENING SCHEMESSOPERATIONAL EXCELLANCE

Inter Regional LinksPresent IR Capacity= 9,000 MW700 MW1100MW2000MW1100 MW900 MW30,500 MW16,00032,700 MW30,500 MW23001850 MW1650 MWGAJUWAKA HVDCBHADRAVATHI HVDCTALCHER KOLAR HVDC LINE

KolarChintamaniCudappahHoodyHosurSalemUdumalpetMadras Blore+/- 500 KV DC line 1370 KMElectrodeStationElectrodeStationTALCHER400kv System220kv systemKOLARTALCHER KOLAR SCHEMATIC

TALCHER-KOLAR IMPORT OF 18422MUs FROM ER THROUGH TALCHER-KOLAR UPTO MAY - 05

YEAR --->2002200320042005MONTHSTOTAL ENERGY (IN MU)MAX FLOW (IN MW)TOTAL ENERGY (IN MU)MAX FLOW (IN MW)TOTAL ENERGY (IN MU)MAX FLOW (IN MW)TOTAL ENERGY (IN MU)MAX FLOW (IN MW)JAN------31185080515288521583FEB------273101070115087751865MAR------491131683716008841507APR------473118392315008781600MAY------172102665213857041500JUN------2779946881416JUL------31910757591490AUG------34610886281341SEP620051215337421552OCT5850050814588291550NOV7750047010487191600DEC24175063013838821615TOTAL382478291654093AVERAGE96399764819MAX FLOW750153316151865

INTER-REGIONAL EXCHANGES DETAILS UPTO 124 WKS (Till 15.05.05)

GRID OPERATION: A TIGHT ROPE WALKBLACK-OUTVOLTAGE COLLAPSEIN-ECONOMICOPERATIONINSTABILITYPOWER SWINGSINCREASED LOSSES

DEEP VALLEYDEEP VALLEYSHARPPEAK

KADAMPARAI PUMP OPERATIONGENERATOR MODEPUMPPUMPSAVINGS OF RS 40 LAKHS EVERY DAYINVESTMENT OF 1600 CRORES SAVED

KADAMPARAI PUMP OPERATION ON 16TH MAY 05

KADAMPARAI GENERATION/PUMP ENERGY FROM JAN - 2003

200320042005GENERATOR MODEPUMP MODEGENERATOR MODEPUMP MODEGENERATOR MODEPUMP MODEJAN3938445800FEB3946212100MAR325161800APR3540263503MAY374341483046JUN29455535JUL47495049AUG54555541SEP36483025OCT261500NOV232400DEC495300TOTAL4465073283303049

OPPORTUNISTIC UI TRADE

DETAILS OF INTER-REGIONAL UI IMPORTS BY SR FROM WR AND ER DURING 21st - 27th MARCH 05

Chart1

2.891.75

2.991.63

2.871.58

3.951.9

3.181.4

2.041.13

2.311.47

SR RATE

WR/ER RATE

DAYS --->

Rs PER UNIT --->

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

Sheet1

ER UIWR UITOTAL UI

SR RATEER RATESR RATEWR RATESR RATEWR/ER RATE

3/21/052.451.373/21/052.931.803/21/052.891.75

3/22/052.181.593/22/053.051.643/22/052.991.63

3/23/052.751.513/23/052.961.633/23/052.871.58

3/24/053.681.743/24/054.041.953/24/053.951.90

3/25/053.161.383/25/053.191.403/25/053.181.40

3/26/052.011.133/26/052.051.133/26/052.041.13

3/27/052.291.483/27/052.321.473/27/052.311.47

WR UIER UITOTAL AMOUNT @ SR RATE

3/21/053.400.393/21/05109.13

3/22/052.380.173/22/0576.29

3/23/053.452.533/23/05171.79

3/24/054.671.493/24/05243.54

3/25/055.821.633/25/05237.08

3/26/058.541.563/26/05206.3

3/27/051.531.163/27/0562.09

NET GAIN

3/21/0521.415

3/22/0517.345

3/23/0538.73

3/24/0563.225

3/25/0566.505

3/26/0546.085

3/27/0511.24

TABLE

UI ENERGY IMPORT BY SR FROM IN MUSTOTAL UI IMPORT AMOUNT@SR RATENET GAIN BY SRAVERAGE UI RATE IN RS. OF

WRERWR AND ER(IN RS LAKHS)(IN RS LAKHS)WRER

21-Mar-053.400.393.78109.1321.422.891.75

22-Mar-052.380.172.5576.2917.352.991.63

23-Mar-053.452.535.99171.7938.732.871.58

24-Mar-054.671.496.17243.5463.233.951.90

25-Mar-055.821.637.45237.0866.513.181.40

26-Mar-058.541.5610.10206.3046.092.041.13

27-Mar-051.531.162.6962.0911.242.311.47

TOTAL29.798.9338.721106.22264.55

GRAPHS

DETAILS OF INTER-REGIONAL UI IMPORT BY SR FROM WR AND ER

GRAPHS

2.451.37

2.181.59

2.751.51

3.681.74

3.161.38

2.011.13

2.291.48

SR RATE

ER RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM ER TO SR

GRAPHS FINAL

2.931.8

3.051.64

2.961.63

4.041.95

3.191.4

2.051.13

2.321.47

SR RATE

WR RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM WR TO SR

Sheet3

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED THROUGH WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI AMOUNT @ SR RATE

42.83

34.69

77.46

126.45

133.01

92.17

22.48

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR

2.891.75

2.991.63

2.871.58

3.951.9

3.181.4

2.041.13

2.311.47

SR RATE

WR/ER RATE

DAYS --->

Rs PER UNIT --->

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED BY SR FROM WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI IMPORT AMOUNT @ SR RATE

21.415

17.345

38.73

63.225

66.505

46.085

11.24

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

Chart2

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED BY SR FROM WR & ER

Sheet1

ER UIWR UITOTAL UI

SR RATEER RATESR RATEWR RATESR RATEWR/ER RATE

3/21/052.451.373/21/052.931.803/21/052.891.75

3/22/052.181.593/22/053.051.643/22/052.991.63

3/23/052.751.513/23/052.961.633/23/052.871.58

3/24/053.681.743/24/054.041.953/24/053.951.90

3/25/053.161.383/25/053.191.403/25/053.181.40

3/26/052.011.133/26/052.051.133/26/052.041.13

3/27/052.291.483/27/052.321.473/27/052.311.47

WR UIER UITOTAL AMOUNT @ SR RATE

3/21/053.400.393/21/05109.13

3/22/052.380.173/22/0576.29

3/23/053.452.533/23/05171.79

3/24/054.671.493/24/05243.54

3/25/055.821.633/25/05237.08

3/26/058.541.563/26/05206.3

3/27/051.531.163/27/0562.09

NET GAIN

3/21/0521.415

3/22/0517.345

3/23/0538.73

3/24/0563.225

3/25/0566.505

3/26/0546.085

3/27/0511.24

TABLE

UI ENERGY IMPORT BY SR FROM IN MUSTOTAL UI IMPORT AMOUNT@SR RATENET GAIN BY SRAVERAGE UI RATE IN RS. OF

WRERWR AND ER(IN RS LAKHS)(IN RS LAKHS)WRER

21-Mar-053.400.393.78109.1321.422.891.75

22-Mar-052.380.172.5576.2917.352.991.63

23-Mar-053.452.535.99171.7938.732.871.58

24-Mar-054.671.496.17243.5463.233.951.90

25-Mar-055.821.637.45237.0866.513.181.40

26-Mar-058.541.5610.10206.3046.092.041.13

27-Mar-051.531.162.6962.0911.242.311.47

TOTAL29.798.9338.721106.22264.55

GRAPHS

DETAILS OF INTER-REGIONAL UI IMPORT BY SR FROM WR AND ER

GRAPHS

2.451.37

2.181.59

2.751.51

3.681.74

3.161.38

2.011.13

2.291.48

SR RATE

ER RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM ER TO SR

GRAPHS FINAL

2.931.8

3.051.64

2.961.63

4.041.95

3.191.4

2.051.13

2.321.47

SR RATE

WR RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM WR TO SR

Sheet3

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED THROUGH WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI AMOUNT @ SR RATE

42.83

34.69

77.46

126.45

133.01

92.17

22.48

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR

2.891.75

2.991.63

2.871.58

3.951.9

3.181.4

2.041.13

2.311.47

SR RATE

WR/ER RATE

DAYS --->

Rs PER UNIT --->

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED BY SR FROM WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI IMPORT AMOUNT @ SR RATE

21.415

17.345

38.73

63.225

66.505

46.085

11.24

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

Chart3

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI IMPORT AMOUNT @ SR RATE

Sheet1

ER UIWR UITOTAL UI

SR RATEER RATESR RATEWR RATESR RATEWR/ER RATE

3/21/052.451.373/21/052.931.803/21/052.891.75

3/22/052.181.593/22/053.051.643/22/052.991.63

3/23/052.751.513/23/052.961.633/23/052.871.58

3/24/053.681.743/24/054.041.953/24/053.951.90

3/25/053.161.383/25/053.191.403/25/053.181.40

3/26/052.011.133/26/052.051.133/26/052.041.13

3/27/052.291.483/27/052.321.473/27/052.311.47

WR UIER UITOTAL AMOUNT @ SR RATE

3/21/053.400.393/21/05109.13

3/22/052.380.173/22/0576.29

3/23/053.452.533/23/05171.79

3/24/054.671.493/24/05243.54

3/25/055.821.633/25/05237.08

3/26/058.541.563/26/05206.3

3/27/051.531.163/27/0562.09

NET GAIN

3/21/0521.415

3/22/0517.345

3/23/0538.73

3/24/0563.225

3/25/0566.505

3/26/0546.085

3/27/0511.24

TABLE

UI ENERGY IMPORT BY SR FROM IN MUSTOTAL UI IMPORT AMOUNT@SR RATENET GAIN BY SRAVERAGE UI RATE IN RS. OF

WRERWR AND ER(IN RS LAKHS)(IN RS LAKHS)WRER

21-Mar-053.400.393.78109.1321.422.891.75

22-Mar-052.380.172.5576.2917.352.991.63

23-Mar-053.452.535.99171.7938.732.871.58

24-Mar-054.671.496.17243.5463.233.951.90

25-Mar-055.821.637.45237.0866.513.181.40

26-Mar-058.541.5610.10206.3046.092.041.13

27-Mar-051.531.162.6962.0911.242.311.47

TOTAL29.798.9338.721106.22264.55

GRAPHS

DETAILS OF INTER-REGIONAL UI IMPORT BY SR FROM WR AND ER

GRAPHS

2.451.37

2.181.59

2.751.51

3.681.74

3.161.38

2.011.13

2.291.48

SR RATE

ER RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM ER TO SR

GRAPHS FINAL

2.931.8

3.051.64

2.961.63

4.041.95

3.191.4

2.051.13

2.321.47

SR RATE

WR RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM WR TO SR

Sheet3

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED THROUGH WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI AMOUNT @ SR RATE

42.83

34.69

77.46

126.45

133.01

92.17

22.48

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR

2.891.75

2.991.63

2.871.58

3.951.9

3.181.4

2.041.13

2.311.47

SR RATE

WR/ER RATE

DAYS --->

Rs PER UNIT --->

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED BY SR FROM WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI IMPORT AMOUNT @ SR RATE

21.415

17.345

38.73

63.225

66.505

46.085

11.24

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

Chart4

21.415

17.345

38.73

63.225

66.505

46.085

11.24

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

Sheet1

ER UIWR UITOTAL UI

SR RATEER RATESR RATEWR RATESR RATEWR/ER RATE

3/21/052.451.373/21/052.931.803/21/052.891.75

3/22/052.181.593/22/053.051.643/22/052.991.63

3/23/052.751.513/23/052.961.633/23/052.871.58

3/24/053.681.743/24/054.041.953/24/053.951.90

3/25/053.161.383/25/053.191.403/25/053.181.40

3/26/052.011.133/26/052.051.133/26/052.041.13

3/27/052.291.483/27/052.321.473/27/052.311.47

WR UIER UITOTAL AMOUNT @ SR RATE

3/21/053.400.393/21/05109.13

3/22/052.380.173/22/0576.29

3/23/053.452.533/23/05171.79

3/24/054.671.493/24/05243.54

3/25/055.821.633/25/05237.08

3/26/058.541.563/26/05206.3

3/27/051.531.163/27/0562.09

NET GAIN

3/21/0521.415

3/22/0517.345

3/23/0538.73

3/24/0563.225

3/25/0566.505

3/26/0546.085

3/27/0511.24

TABLE

UI ENERGY IMPORT BY SR FROM IN MUSTOTAL UI IMPORT AMOUNT@SR RATENET GAIN BY SRAVERAGE UI RATE IN RS. OF

WRERWR AND ER(IN RS LAKHS)(IN RS LAKHS)WRER

21-Mar-053.400.393.78109.1321.422.891.75

22-Mar-052.380.172.5576.2917.352.991.63

23-Mar-053.452.535.99171.7938.732.871.58

24-Mar-054.671.496.17243.5463.233.951.90

25-Mar-055.821.637.45237.0866.513.181.40

26-Mar-058.541.5610.10206.3046.092.041.13

27-Mar-051.531.162.6962.0911.242.311.47

TOTAL29.798.9338.721106.22264.55

GRAPHS

DETAILS OF INTER-REGIONAL UI IMPORT BY SR FROM WR AND ER

GRAPHS

2.451.37

2.181.59

2.751.51

3.681.74

3.161.38

2.011.13

2.291.48

SR RATE

ER RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM ER TO SR

GRAPHS FINAL

2.931.8

3.051.64

2.961.63

4.041.95

3.191.4

2.051.13

2.321.47

SR RATE

WR RATE

DAYS --->

Rs PER UNIT --->

UI TRANSACTION FROM WR TO SR

Sheet3

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED THROUGH WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI AMOUNT @ SR RATE

42.83

34.69

77.46

126.45

133.01

92.17

22.48

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR

2.891.75

2.991.63

2.871.58

3.951.9

3.181.4

2.041.13

2.311.47

SR RATE

WR/ER RATE

DAYS --->

Rs PER UNIT --->

AVERAGE UI TRANSACTION RATES IN RESPECTIVE REGIONS

3.3960.386

2.380.169

3.4532.534

4.6741.491

5.8181.628

8.5411.558

1.5251.163

WR UI

ER UI

DAYS -->

ENERGY IN MUs --->

UI ENERGY IMPORTED BY SR FROM WR & ER

109.13

76.29

171.79

243.54

237.08

206.3

62.09

TOTAL AMOUNT @ SR RATE

DAYS --->

IN LAKHS --->

TOTAL UI IMPORT AMOUNT @ SR RATE

21.415

17.345

38.73

63.225

66.505

46.085

11.24

NET GAIN

DAYS --->

IN LAKHS --->

NET GAIN BY SR CONSTITUENTS DUE TO RATE DIFFERENTIAL

FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04SHARAVATHI -1FREQ DROP FROM 49.72 HZ TO 49.27 HZ i.e. ~ 0.45HZ

FREE GOVERNOR MODE OF OPERATION ON 12-DEC-04SHARAVATHI -4FREQ DROP FROM 49.72 HZ TO 49.27 HZ i.e. ~ 0.45HZ

SHARAVATHI GENERATION TYPICAL DAYFREQMW

OPTIMAL RESERVOIR UTILISATIONSHARAVATHY / IDDUKIPLANT OPERATORS AT THESE STATIONS THINK OF THE RESERVOIR LEVEL IN RUPEES RATHER THAN IN FEET!!!Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.Rs.

SUMMARY OF UI 124 WKS(FROM 01/JAN/03 TO 15/MAY/05)

APKARKERTNPONDYTotal UI exported(-) / Imported(+) in MUs-4441413212101163-140Total amount paid in Crores Rs.-89976820434428Average rate of UI in paise/unit202186169296203

UI IN SR (FROM 01/01/03 TO 15/05/05)

TOTAL UI TURNOVER :- 7792 MU

TOTAL UI AMOUNT DISBURSED:- 1600 CR

AVG WEEKLY TRANSACTION:- 63 MU

AVG WEEKLY UI AMOUNT DISBURSED:- 13 CR

ABOUT 7000 MW OF CAPACITY IS BELOW 100 PsABOUT14200 MW OF CAPACITY IS BELOW 200 PsABOUT 16000 MW OF CAPACITY IS BELOW 300 PsCUM. INS. CAP.

MAJOR AND MINOR DISTURBANCES SINCE 1994NO DISTURBANCES DESPITE LOSING ENTIRE SUPER GENERATING PLANTS LIKERAMAGUNDAM,VIJAYAWADA,KOTHAGUDEM, NORTH CHENNAI, SHARAVATHY ETC

49.72 HZ

MERIT ORDER : UNITS BOXED UP

POWER STATIONSTATECAPACITY(MW)FUELVARIABLE COSTTATA DIESELKARNATAKA79DIESEL308RAYALSEEMA DGPPKARNATAKA27DIESEL360YELEHANKA DIESELKARNATAKA128DIESEL314THANRBHAVIKARNATAKA220NAPTHA325SUB-TOTAL454BRAHAMPURAM DPPKERALA107DIESEL275BSESKERALA157NAPTHA308KASARGODE PCLKERALA22NAPTHA298KAYAMKULAMKERALA360NAPTHA322SUB-TOTAL646BASIN BRIDGETAMIL NADU120NAPTHA584P.P.NALLURTAMIL NADU330NAPTHA415SUB-TOTAL450TOTAL1550

ERLDCWRLDCNRLDCSRLDCNERLDCNLDC32 Nos.51 Nos.1160Nos.Unified Grid Operation5 Nos.NationalLevelRegionalLevelState HQLevelGroup / Distt LevelPlant / Sub-Station Level

RLDC,BangaloreKalamasseryHyderabadBangaloreChennaiCuddapahWarangalVijayawadaKalamerryKannurTrivandrumChennaiErodeMaduraiBangalore

Lingusugur

HubliCPCCSCC, PondyHyderabadHierarchy of The ULDC Scheme in Southern Region Andhra KeralaTamilnaduKarnataka

Andhra PradeshKarnatakaKeralaTamilnaduUT of PondyVijayawadaWarangalHYDERABADGhanapurChinkampalliCHENNAI PondyMaduraiKannur-BKALAMASSERYVydyuthi BhavanamErodeMW LinkFO LinkState owneed LinkSub-LDCSLDCRCLDCHubliDavangereeBangaloreInformation Flow to Control CentresSatelliteRamagundam

Annual Inter-Regional Energy Transfer10,000MUTransformation Capacity 45000 MVATransformers (220kV and above)480 nos.Installed Capacity32704 MWIntegrated Opn of Ten Power Utilities Dynamic Grid Conditions

Southern Region Grid Complexities in Monitoring & ControlGenerators Hydro, Thermal,Gas/IPP422 nos. Transmission Network 400/220kV 37500 Ckm30,000 POINTS Active Power, Reactive Power,Voltage, Frequency, Transformer Tap Position, Circuit Breaker Position, Isolator Position etc.

ULDC-THE EYES AND EARS OF THE SYSTEM OPERATORALL CONSTITUENTS GET THE SAME DATA IN REAL TIME.TRANSPARENCY.SYNERGY IN OPERATION.NO PASSING THE BUCK APPROACH.QUANTUM LEAP IN VISIBILITY TO OPERATOR.INCREASED CONFIDENCE.FOCUS ON SECURITY AND ECONOMY.INCRESED SCOPE FOR TRANSACTIONS WITH OTHER REGIONS

PREMPTIVE, DYNAMIC EARLY WARNING SYSTEMS.GRID LESS VULNERABLE TO DISTURBANCES.ACCURATE AND EASY ANALYSIS OF GRID INCIDENTS FASTER RESTORATION AFTER PERTURBATIONCOMPREHENSIVE EMS FUNCTIONS.

SCADA SYSTEMSCADA SYSTEM FULLY FUNCTIONALDATA COLLECTION/ ARCHIVINGDDC ( DISTURBANCE DATA COLLECTION) BEING EXTENSIVELY USEDTREND GRAPHS USED EXTENSIVELY BY SYSTEM OPERATORS AT RSCC AND SLDCSALARMS AND EVENTS DATABASE BEING CONFIGURED

ULDC : EMS FUNCTIONSREAL TIME NETWORK ANALYSIS IN OPERATIONSTATE ESTIMATION TOOL

REAL TIME CONTINGENCY ANALYSISCONTINGENCY CAN BE ANALYSED BY OPERATORSYSTEM SUGGESTS REMEDIAL AND PREVENTATIVE ACTIONS

Packages under ULDC scheme

Sl No:PackageContractorContract Value1EMS/SCADA SystemGE Harris, USARs. 148 Crores2Fibre Optic SystemPIRELLI, ItalyRs.100 Crores3Microwave SystemALSTOM, FranceRs. 63 Crores4PLCC/PABXPuncom, PunjabRs. 4 Crores5Auxiliary Power supply packageTATA LIEBERT, MumbaiRs.6 Crores6Control CentreFacilities renovation/constructionAwarded separately by each Constituent

EMS/SCADA Package Contd

Sl No:Constituent RTUs suppliedExisting RTUs integratedControl Centres1.0APTRANSCO 91- 42.0TNEB 4035 33.0KPTCL 2221 34.0KSEB 30- 35.0UT of Pondy 59 16.0Central Sector27- 1Total2156515 RTUs Grand Total : 280

INTRA-STATE ABTCOMMUNICATION REQUIREMENTSSLDC TO DISCOM COMMUNICATION TO BE ON A STRONG REDUNDANT BACKBONEVISIBILITY OF DATA TO SYSTEM OPERATORINTERCHANGE FLOWSEMBEDDED GENERATORSWIND FARMS, MINI HYDEL, CPP TO BE TELEMETERED IN STAGESAND FINALLY, DMS SYSTEM FOR LOAD MANAGEMENTDATA ARCHIVAL AND ANALYSIS COULD HELP IN ACCURATE SCHEDULING

TRAINING PROGRAMSIDENTIFY AND ADDRESS TRAINING NEEDSINTER-NETWORKING TRAININGIDENTIFIED AS KEY AREAADDRESSED BY AN EXHAUSTIVE TRAINING BY REPUTED COMPANYPARTICIPANTS GAVE EXCELLENT FEEDBACKTRAINING ON AIX OPERATING SYSTEM , NETWORKING NMS AND SYBASE COMPLETED- RTU TRAINING ON ANVILRE-TRAINING STRATEGYTRAINING FOR XA21 OPERATORS WILL BE CONDUCTED EVERY ALTERNATE MONTH BY SRLDC TRAINING PROGRAMME FOR DEVELOPERS PLANNED EVERY TWO MONTHS CUSTOMISED MODULES WOULD BE SETUP AS PER REQUIREMENT

TRAINING CONDUCTED SO FAR

SLNAME OF THE TRAININGFROMTO1CISCO ROUTER & NETWORKING19-01-200424-01-20042XA-21 USER LEVEL23-02-200428-02-20043RTNA WORKSHOP29-03-200431-03-20044AIX OPERATING SYSTEM17-05-200422-05-20045XA-21 USER LEVEL21-06-200425-06-20046SYBASE ADMINISTRATION22-11-200404-12-20047XA-21 USER LEVEL21-02-200523-02-20058NMS SUITE OF APPLICATIONS13-06-200518-06-2005

GENERATION ADDITION & SYSTEM STRENGTHENINGGENERATION ADDITION500MW TALCHER U # 5 ON COMMERCIAL OPERATION W.E.F 1ST NOV 04500MW U#7 AT NTPC, RAMAGUNDAM TEST SYNCHRONISED ON 26-SEP-04.SYSTEM STRENGTHENING220KV INTER-STATE LINES OF AP KAR IN PARALLELSEDAM TANDUR FROM 18-AUG-04GOOTY ALIPUR FROM 10-SEP-0440% FIXED SERIES COMPENSATION COMMISSIONED AT GOOTY OF GOOTY-HOODY LINE ON 19/OCT/04 FLOW INCREASED FROM 110MW TO 140MW.CUDDAPAH OF NSAGAR-CUDDAPAH D/C LINE ON 20-21/OCT/04FLOW INCREASED FROM 270MW TO 355MW.400KV RAMAGUNDAM HYDERABAD III & IV ON COMMERCIAL OPERATION FROM 01-NOV-04.Contd..

GENERATION ADDITION & SYSTEM STRENGTHENINGSYSTEM STRENGTHENINGHYDERABAD-KURNOOL S/CKURNOOL GOOTY S/CGOOTY NELAMANGALA S/CGAZUWAKA-NUNNA D/C LINE WITH 63 MVAR LINE REACTOR AT BOTH ENDS

NEW PROJECTS ON THE ANVILKUDANKULAM TRANSMISSION SYSTEM( 2000MW)LINES : 601+ 350 = 950 Km. ESTIMATED COST = 1710 CRORES KUDANKULAM-TIRUNELVELI 2 X 400 KV D/C LINES WITH QUAD (108 & 83 Km.) TIRUNELVELI-UDUMALPET D/C LINE WITH TWIN MOOSE (300Km) LILO OF BOTH CIRCUITS OF MADURAI-TRIVANDRUM LINE AT TIRUNELVELI ( 2 X 55 Km) EDAMON-MUVATTUPUZHA D/C LINE QUAD (150Km) TIRUNELVELI-EDAMON 400KV D/C LINE (110Km). MUVATTUPUZHA-TRICHUR 400KV D/C LINE WITH QUAD CONDUCTORS (90Km)T NKARNATAKAKERALA

NEW PROJECTS ON THE ANVILKUDANKULAM TRANSMISSION SYSTEM( 2000MW)SUB-STATIONS NEW 400/220KV SUBSTATIONS AT TIRUNELVELI, MUVATTUPUZHA AUGMENTATION OF TRANSFORMATION CAPACITY BY ONE TRANSFORMER EACH AT UDUMALPET & TRIVANDRUM S/SSUPPLEMENTARY TRANSMISSION SYSTEM LILO OF ONE CIRCUIT OF 400KV MADURAI-TRICHY AT KARAIKUDI ( 60 Km) ALONG WITH SUBSTATION AT KARAIKUDI (TAMILNADU) LILO OF ONE CIRCUIT OF TALAGUPPA-NELAMANGALA 400KV LINE AT HASSAN ( 80 KM) ALONG WITH SUBSTATION AT HASSAN.(KARNATAKA)

NEW PROJECTS ON THE ANVILKAIGA 3 & 4 TRANSMISSION SYSTEMLINES : 413 Kms MYSORE-KOZHIKODE D/C LINE LILO OF KOLAR-SRIPERUMBADUR AT MELAKOTTAIYUR (40KM) NARENDRA-DAVANGERE D/C LINE SUB-STATION : 2 Nos. New NEW 400/220KV SUBSTATION AT KOZHIKODE & MELAKOTTAIYUR 2ND 315MVA TRANSFORMER AT HIRIYUR S/S. BAY EXTENSION AT NARENDRA, DAVANGERE (KPTCL) & HIRIYUR.COST ESTIMATE : 512 CRORESKERALA

NEW PROJECTS ON THE ANVILNLC-TS-II EXPANSION TRANSMISSION SYSTEMLINES : 467 Km. 2 NOS. 400KV S/C LINES FROM NEYVELI-TS-II (EXISTING) TO NLC TS-II (EXPAN) (8 KM). NEYVELI-PUGALUR D/C LINE PUGALUR-MADURAI D/C LINE UDUMALPET-ARASUR D/C LINE LILO OF NEYVELI-SRIPERUMBU- DUR LINE AT PONDY.SUB-STATION NEW 400/220KV SUBSTATIONS AT PUGALUR, ARASUR & PONDICHERRY.COST ESTIMATE : 721 CROREST NKERALA

KARNATAKA

SYSTEM STRENGTHENING SCHEMES400 KV D/C KAIGA-NARENDRA400 KV D/C MADURAI-TRIVANDRUM400 KV D/C NELMANGALA-SOMANAHALLI400 KV D/C RAICHUR-GOOTY LINELILO OF SRISAILAM-NUNNA AT NSAGARLILO OF NSAGAR-RAICHUR AT MEHBOOBNAGARLILO OF NELLORE-MADRAS D/C AT ALMATHI2X315 MVA, 400/220 KV SS AT ALMATHI 2X315 MVA, 400/220 KV SS AT ALMATHI

400 MU CONS IN A DAY-1.5% IS 6 MU, 2190 MU IN A YEAR, 2/UNIT IS 4400 MILLION RUPEES IS 440 CRORE RUPEESTALA PROJECT-LARGE CENTRAL GRID ARUNACHAL TO GUJARAT ON SAME FREQ400 MU CONS IN A DAY-1.5% IS 6 MU, 2190 MU IN A YEAR, 2/UNIT IS 4400 MILLION RUPEES IS 440 CRORE RUPEES400 MU CONS IN A DAY-1.5% IS 6 MU, 2190 MU IN A YEAR, 2/UNIT IS 4400 MILLION RUPEES IS 440 CRORE RUPEES400 MU CONS IN A DAY-1.5% IS 6 MU, 2190 MU IN A YEAR, 2/UNIT IS 4400 MILLION RUPEES IS 440 CRORE RUPEES400 MU IS WORTH 800 MILLION RUPEES AT RS 2.00/UNIT WHICH IS 80CRORE RUPEES400 MU IS WORTH 800 MILLION RUPEES AT RS 2.00/UNIT WHICH IS 80CRORE RUPEES